74 lines
3.7 KiB
TypeScript
74 lines
3.7 KiB
TypeScript
import assert from 'node:assert/strict'
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import fc from 'fast-check'
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import test from 'node:test'
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import type { AdfNode } from '../adf/document.ts'
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import { adfDocument, propertyRuns, propertyTimeout } from './property-harness.ts'
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import { adfToMarkdown } from '../markdown/emit/adf-to-markdown.ts'
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import { adfToPlainMarkdown, reduceToPlain } from '../markdown/plain/adf-to-plain-markdown.ts'
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import { directivePrefix } from '../markdown/directive-syntax.ts'
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import { markdownToAdf, plainMarkdownToAdf } from '../markdown/parse/markdown-to-adf.ts'
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import { toEditorNormal } from '../markdown/plain/editor-normal.ts'
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const gateRuns = 1600
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const renamedPrefix = '!adg:'
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// Renaming the prefix changes what markdown reads only where a directive was read.
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function readsNoDirective(markdown: string): boolean {
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const read = markdownToAdf(markdown)
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const renamed = markdownToAdf(markdown.replaceAll(directivePrefix, renamedPrefix))
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return read.ok && renamed.ok && JSON.stringify(read.value).replaceAll(directivePrefix, renamedPrefix) === JSON.stringify(renamed.value)
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}
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// Each block's text, an expand's title and an image's alt and url, in document order: what the plain pair keeps.
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function shownText(nodes: readonly AdfNode[]): string[] {
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const shown: string[] = []
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for (const node of nodes) {
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const attrs = node.attrs ?? {}
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if ((node.type === 'expand' || node.type === 'nestedExpand') && typeof attrs['title'] === 'string') shown.push(attrs['title'])
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if (node.type === 'media') shown.push(`${JSON.stringify(attrs['alt'] ?? '')} ${JSON.stringify(attrs['url'])}`)
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const content = node.content ?? []
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if (content.some((child) => child.type === 'text' || child.type === 'hardBreak')) shown.push(content.map((child) => child.text ?? '\n').join(''))
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else for (const text of shownText(content)) shown.push(text)
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}
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return shown.filter((text) => text !== '')
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}
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test('a generated document refuses to emit, or its markdown reads back to it', { timeout: propertyTimeout }, () => {
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fc.assert(
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fc.property(adfDocument, (document) => {
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const emitted = adfToMarkdown(document)
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if (!emitted.ok) return
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const read = markdownToAdf(emitted.value)
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assert.ok(read.ok, read.ok ? '' : `${read.error.code}: ${read.error.message} — reading ${JSON.stringify(emitted.value)}`)
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assert.deepEqual(read.value, document, `reading ${JSON.stringify(emitted.value)}`)
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}),
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propertyRuns(gateRuns),
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)
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})
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test('a generated document writes plain markdown refusing only what the guard refuses, and that markdown reads back to its text and to itself', { timeout: propertyTimeout }, () => {
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fc.assert(
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fc.property(adfDocument, (document) => {
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const written = adfToPlainMarkdown(document)
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assert.ok(written.ok, written.ok ? '' : `${written.error.code}: ${written.error.message}`)
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assert.ok(readsNoDirective(written.value), `a directive in ${JSON.stringify(written.value)}`)
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const read = plainMarkdownToAdf(written.value)
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assert.ok(read.ok, read.ok ? '' : `${read.error.code}: ${read.error.message} — reading ${JSON.stringify(written.value)}`)
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const reduced = reduceToPlain(document)
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assert.deepEqual(shownText(read.value.content ?? []), reduced.ok ? shownText(reduced.value.content ?? []) : reduced, `reading ${JSON.stringify(written.value)}`)
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assert.deepEqual(adfToPlainMarkdown(read.value), written, `reading ${JSON.stringify(written.value)}`)
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}),
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propertyRuns(gateRuns),
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)
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})
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test('a generated document writes the plain markdown its editor-normal form writes', { timeout: propertyTimeout }, () => {
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fc.assert(
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fc.property(adfDocument, (document) => {
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assert.deepEqual(adfToPlainMarkdown(document), adfToPlainMarkdown(toEditorNormal(document)))
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}),
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propertyRuns(gateRuns),
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)
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})
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